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          <h1 class="post-title" itemprop="name headline">$.ajax,$.post,$.get参数详解</h1>
        

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        <p>$.ajax,$.post,$.get参数详解</p>
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<h2 id="ajax-options-参数"><a href="#ajax-options-参数" class="headerlink" title="$.ajax(options); 参数"></a>$.ajax(options); 参数</h2><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div></pre></td><td class="code"><pre><div class="line">url(String):发送请求的地址。</div><div class="line"></div><div class="line"><span class="built_in">type</span>(String):默认: <span class="string">"GET"</span>) 请求方式 (<span class="string">"POST"</span> 或 <span class="string">"GET"</span>)。</div><div class="line"></div><div class="line">async:<span class="literal">true</span>;默认为<span class="literal">true</span>，为异步请求，<span class="literal">false</span>为同步请求。</div><div class="line"></div><div class="line">beforeSend(<span class="keyword">function</span>);发送请求前可修改 XMLHttpRequest 对象的函数。</div><div class="line"><span class="keyword">function</span>(XMLHttpRequest)&#123;</div><div class="line"> --this//</div><div class="line">&#125;</div><div class="line"></div><div class="line">cache:<span class="literal">true</span>;默认<span class="literal">true</span>,设置为<span class="literal">false</span>将不会从浏览器缓存中加载请求信息。</div><div class="line"></div><div class="line">complete(<span class="keyword">function</span>);请求完成后回调函数。</div><div class="line"><span class="keyword">function</span> (XMLHttpRequest, textStatus) &#123;</div><div class="line">    this; // 调用本次AJAX请求时传递的options参数</div><div class="line">&#125;</div><div class="line"></div><div class="line">contentType:<span class="string">'application/x-www-form-urlencoded'</span>;发送信息至服务器时内容编码类型。</div><div class="line"></div><div class="line">data:&#123;value:<span class="string">'text'</span>&#125;;发送到服务器的数据。</div><div class="line"></div><div class="line">dataFilter(<span class="keyword">function</span>):给Ajax返回的原始数据的进行预处理的函数。</div><div class="line"><span class="keyword">function</span> (data, <span class="built_in">type</span>) &#123;</div><div class="line">// 对Ajax返回的原始数据进行预处理</div><div class="line">    <span class="built_in">return</span> data // 返回处理后的数据</div><div class="line">&#125;</div><div class="line"></div><div class="line">dataType(String):预期服务器返回的数据类型。默认返回 responseXML 或 responseText。（xml,html,script,json,jsonp,text）。</div><div class="line"></div><div class="line">error(<span class="keyword">function</span>);(默认: 自动判断 (xml 或 html)) 请求失败时调用.</div><div class="line"><span class="keyword">function</span> (XMLHttpRequest, textStatus, errorThrown) &#123;</div><div class="line">    // 通常 textStatus 和 errorThrown 之中</div><div class="line">    // 只有一个会包含信息</div><div class="line">    this; // 调用本次AJAX请求时传递的options参数</div><div class="line">&#125;</div><div class="line"></div><div class="line">success(<span class="keyword">function</span>);请求成功后回调函数。参数：服务器返回数据，数据格式。</div><div class="line"><span class="keyword">function</span> (data, textStatus) &#123;</div><div class="line">    // data 可能是 xmlDoc, jsonObj, html, text, 等等...</div><div class="line">    this; // 调用本次AJAX请求时传递的options参数</div><div class="line">&#125;</div><div class="line"></div><div class="line">username (String) : 用于响应HTTP访问认证请求的用户名</div><div class="line"></div><div class="line">timeout (Number) : 设置请求超时时间（毫秒）。此设置将覆盖全局设置。</div><div class="line"></div><div class="line">global (Boolean) : (默认: <span class="literal">true</span>) 是否触发全局 AJAX 事件。设置为 <span class="literal">false</span> 将不会触发全局 AJAX 事件。</div><div class="line"></div><div class="line">ifModified (Boolean) : (默认: <span class="literal">false</span>) 仅在服务器数据改变时获取新数据。使用 HTTP 包 Last-Modified 头信息判断。</div><div class="line"></div><div class="line">jsonp (String) : 在一个jsonp请求中重写回调函数的名字。这个值用来替代在<span class="string">"callback=?"</span>这种GET或POST请求中URL参数里的<span class="string">"callback"</span>部分，比如&#123;jsonp:<span class="string">'onJsonPLoad'</span>&#125;会导致将<span class="string">"onJsonPLoad=?"</span>传给服务器。</div><div class="line"></div><div class="line">password (String) : 用于响应HTTP访问认证请求的密码</div><div class="line"></div><div class="line">processData (Boolean) : (默认: <span class="literal">true</span>) 默认情况下，发送的数据将被转换为对象(技术上讲并非字符串) 以配合默认内容类型 <span class="string">"application/x-www-form-urlencoded"</span>。如果要发送 DOM 树信息或其它不希望转换的信息，请设置为 <span class="literal">false</span>。</div><div class="line"></div><div class="line">scriptCharset (String) : 只有当请求时dataType为<span class="string">"jsonp"</span>或<span class="string">"script"</span>，并且<span class="built_in">type</span>是<span class="string">"GET"</span>才会用于强制修改charset。通常在本地和远程的内容编码不同时使用。</div></pre></td></tr></table></figure>
<p>示例：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line">$.ajax(&#123;</div><div class="line">   <span class="built_in">type</span>: <span class="string">"POST"</span>,</div><div class="line">   url: <span class="string">"some.PHP"</span>,</div><div class="line">   data: <span class="string">"name=John&amp;location=Boston"</span>,</div><div class="line">   success: <span class="keyword">function</span>(msg)&#123;</div><div class="line">     alert( msg );</div><div class="line">   &#125;</div><div class="line">&#125;);</div></pre></td></tr></table></figure>
<h2 id="post-参数"><a href="#post-参数" class="headerlink" title="$.post();参数"></a>$.post();参数</h2><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line">url:规定把请求发送到哪个 URL。</div><div class="line"></div><div class="line">data:请求发送到服务器的数据。</div><div class="line"></div><div class="line">dataType:服务器响应的数据类型，默认智能判断（xml,json,script,html）。</div><div class="line"></div><div class="line">success(data,textStatus,XHR):请求成功时执行的回调函数。</div></pre></td></tr></table></figure>
<p>示例：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div></pre></td><td class="code"><pre><div class="line">$.post(&#123;</div><div class="line">    url:<span class="string">'test.html'</span>,</div><div class="line">    data:&#123;value:<span class="string">'测试'</span>&#125;,</div><div class="line">    dataType:<span class="string">'json'</span>,</div><div class="line">    <span class="keyword">function</span>(data,textStatus,xhr)&#123;</div><div class="line">        <span class="keyword">if</span>(textStatus==<span class="string">'success'</span>)&#123;</div><div class="line">        ---执行</div><div class="line">        &#125;</div><div class="line">    &#125;</div><div class="line">&#125;);</div></pre></td></tr></table></figure>
<h2 id="get-参数"><a href="#get-参数" class="headerlink" title="$.get();参数"></a>$.get();参数</h2><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line">url:请求发送的url。</div><div class="line"></div><div class="line">data:发送到服务器的数据。</div><div class="line"></div><div class="line">dataType:服务器响应数据类型；默认智能判断（xml,html,text,scritp,json,jsonp）</div><div class="line"></div><div class="line">success(response,status,xhr):回调函数，response-来自请求的结果数据；status-包含请求状态；xhr-包含XMLHttpRequest对象。</div></pre></td></tr></table></figure>
<p>等价于：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line">$.ajax(&#123; </div><div class="line">    <span class="built_in">type</span>: <span class="string">'GET'</span>, </div><div class="line">    url: url, </div><div class="line">    data: data, </div><div class="line">    success: success, </div><div class="line">    dataType: dataType</div><div class="line">&#125;);</div></pre></td></tr></table></figure>

      
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          proceedsearch();
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    // handle and trigger popup window;
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